System of motor control.



No. 870,029. PATENTED NOV. 5, 1907.

J. H. HALL. SYSTEM OFMOTOR CONTROL.

APPLICATION FILED MAR 19, 1906.

2 SHEETS-SHEET 1.

"iv. +b H w a '"a Eva-Humans: Q I mvan'ron r; 0 1 Y E 'y/LW 77 No. 870,029. PATENTED NOV. 5 190-7.

J. H. HALL.

SYSTEM OF MOTOR CONTROL. APPLICATION FILED MAB.19, 1906.

2 SHEETS-SHEET 2.

:WII'NEIQBI; INVIZNroR [g OM 776W,

- at H. HALL; on 0310,}.jtfg'sjengx TQfELEGTRIC eo wgaonten AND SUPPLY COMPANY;70ECLEVELAND;OHIOQAOO'RPQRATIQN.OEOHIO.

Q 4. M1 it may I n oniuo' ron comnon ate-$870,0 9;

resen e new a, 1901.

, Amie-me; m; mi 19. 1005. semi Io. 306.757.

' I Unite stgtee,vree din eiici vemdyin the a '0:

= Guyahoga and State of'Qhio', have'ihvemed or discoveeredhewland nsciul Imbmvuiehte ih'syst ems of Motor 3 7 Control, ef whi ch the following is h specification.

My invention; relptesftc systems: foi co'iitrollingtone r more electric mptmsjrcuie pointdistant-"fmm them.

'- objectsof .this ilivelitiqn ere to pmjyid e' a system of motoi' cntr cl,usin g'pregenbly two wireslto connect fthe'pg dst q-cohtmllei with'the magnetic controlling iii the motor current is al- 18m! the e t e,

. i he s mis hrkenmiithefirst of; series 6t chatteltoclit the miMherof-bpetations of 5,- Y 7 i eeht'theepei'etibn of the rein-sing when mg evnihgin echahism tbj a' pinimu n} .apd -to pre- ,tetn to the denti'olci mbtofs en one of more carsgt in whichiall the motel s be cenmflled. bom one master-cbntrcfler in fo'n, is'l'dihgnmmnticwiew of one he iit e 11 l. i;- T i if. eeme t am e the switchs in 'm'e' rotat'qm of the ieeejneneaizeetien, m t-x5 w ne 3 1 f-w chfl V 8; at. the switches S! Qik'lt the S7 sr. The switches s ma s1 n alternately with the s'witchse '8"; the dosihg {if one s m 0! i he i the I fem; this I switch S and throiigh t-he auiihiry 'cohta cts a.

ants ether pair; in 'the'oppositedirectioh. t n -interlocking bee tis prpvid edhet wcen the switches S 'tp S to p'rev 'm both hie'gnhersoteitlier, ei 'ie m c 1csi1ig es the se ne-time. Theso lenoid s. of the switches S ands cpnnected 'ac oss the' mairisi, I i I 1 i The switches Sf-S erep'roiided with a pairioi en;- iliary contacts, 'one; being connected to thheg'ativ'e :are in' series and hridg'ed ee'geee the mains; and" the solenoids-lei theswitches S? a'rid S are also il series end ing switch;v The wire cennecting the second etthe said aiikiliary ccntacts includes itheectuat irig sblehdid "of c said succeeding switch;

t The switches Sf zindsteehh-hgve peirof miiilhirf contacts, one 'contact etch pair bei igkohnected t6 the: solenoid :qfthe switch S 'the jsecondffco tect of wswitchsi is coimected to thenegetiye n ain', and of the which isthe 'only} switch requiring-such edeyice'. the switch of the master' 'contreile'r', connected tc the entai'ni lg termmei' i the eieneid bf the switchfi -t- Gian-d G? iam t o fiz c'sintec tsfeonimcted to h'single The two-partsi of contects cohtrolldlhy 'tc" SParemto ite sides of the ivot theredf, or

pp P

wil l nbt be bridged 'iaLt the same instant." v

"to insure that both of said pa'ii -The} operatibnuof Fig. 1 is es fellows the hensbeing B s shown thereon; If the switch G nid' v'ed tolbridge I the-contacts GP and the cufi'ent fi-Om the positive coiitect G passes in parallelto -the solenoid cf the Froin the'cqntacts c thecu rrelit, 1:: a to the points 0 end 0 end my the selenqids L i the"switches s and ,s"

td"t he"negatiye mi iii, causing these switches to close isrid 'ea its cox itacts, 'by whichtheremaining e1 eth'esblerioidpi the switch s is connected o 1 am an l its magma other paireb of Q' contacts. Thejpctot circuit is now closed mid trabed es} icllcwszj item the positive pole of \the ,s thmgl gh' meswitcHSh "t whole of e s ,vthe 'fieId'fF; theswitch' s the -hrush A}. the,

will he threw in autometicelly asthe "hihtorspeeds'up in a mamiepwellkndwh; L If the'mastive poleoflthe switch Sf. vThe other' resisttmcei. cenfor switch, the

connections being such that when the master switch is operated to start the motor in either direction the winding of one of suid pair of electro-magnets will be short circuited and the other winding of said pair will be connected directly across the supply mains until said magnetically operated main switch is closed, the closure of the main switch mechanically opening the auxiliary switch and thereby opening the short circuit and disconnecting said winding, from the master controller.

4; In a system for controlling electric motors, a motor reversing mechanism, electro-magnets for operating said reversing mechanism, a magnetically operated main switch, and a master switch, said master switch being connected to one end of the winding 0! the operating coil of said main switch and through an auxiliary switch to the windings oi the elccIre-magnets which operate said reversing mechanism, said auxiliary switch being mechanically interlocked with said main switch in such manner that it is opened by the closure of said main switch and is closed by the opening of said main switch, thus preventing, actuation of the re versing mechanism when the main switch is closed.

5. In a system for controlling electric motors, a inotor, a main switch therefor, a magnetically controlled revers ing mechanism for said motor, a master controller entirely disconnected from the controlling magnets of said reversing mechanism when said main switch is closed, and an auxiliary switch mechanically closed by the opening ofsaid main switch whereby the master controller is connected to said reversing mechanism when the main switch is open.

G. In a system for controllingelectric motors, a motor, a main switch, an electro-magnet for closing the same, an electro-magnetically controlled reversing mechanism for said motor, a master controller, two wires lending from the same, one being in circuit with the winding of the electro magnet ot' the main switch and the other in circuit with the winding oi the eiectro-magnets of the reversing mechanism when said main switch is open, and means mechnnica lly controlled by the closure of said main switch for entirely opening the circuit between the master controller and the'electro-magnets of the reversing mechanism Signed at Cleyelund, 0., this 14th day of March, 1906.

JAY n. HALL. Witnesses:

A. C. EASTWOOD, J. E. \VnLmuN. 

